How to check if image file exist before loading it into UIoader

General
,
11

You are right, I tested it, and found the same, as you. Sorry for saying something wrong. The code needs to be:

package
{
	import flash.display.MovieClip;
	import flash.events.IOErrorEvent;
	import se.svt.caspar.template.CasparTemplate;

	public class UILoader_Test extends CasparTemplate
	{
		private function loaderIOErrorHandler(errorEvent:IOErrorEvent):void
		{
			title2.text = " Error ";
		}
		
		override public function postInitialize():void
		{
			Logo.addEventListener(IOErrorEvent.IO_ERROR, loaderIOErrorHandler);
			
			title1.text = " Try to load ";
			Logo.source = "file:///D:/-CasparCG Server/templates/DELA.PNG";
		}

		override public function Play():void
		{
		}

		override public function Stop():void
		{
			removeTemplate();
		}

		override public function SetData(xmlData:XML):void 
		{		
			//super.SetData(xmlData);		
		}
	}
}

Because the ioError happens asynchronous, we need to catch the event. But you could leave the loaderIOErrorHandler function empty, to just prevent the template from crashing. By the way: the code, that loads the file into the UILoader can also be somewhere else (like in the SetData() function). Because the addEventListener is called inside postInitialize(), that is called before anything else, the code would still work.

You find a zip file with my test template here.